利索-全球专利检索

  1. 登录
  2. 注册
发明授权
US08063718B2 Duplexer, communication module, and communication device 有权
双工器，通信模块和通信设备

Duplexer, communication module, and communication device
摘要：
A duplexer of the present invention includes a reception filter (3) for passing signals in a predetermined frequency band and attenuates signals in the other frequency bands among reception signals input to an antenna port, and a transmission filter (4) for passing signals in a predetermined frequency band and attenuates signals in the other frequency bands among transmission signals input from the outside and outputting them to the antenna port. The duplexer further includes a conversion circuit (22) provided with a single-ended input terminal connected to the antenna port and balanced output terminals. The reception filter (3) is provided with a balanced input terminal connected to the output terminal of the conversion circuit (22) and a balanced output terminal for outputting the filtered reception signal. Thus, a balance-output-type duplexer that is connectable to a balance-input-type LNA and is free from loss and degradation in power-handling capability, a communication module and a communication device can be realized.
摘要（中）：

本发明的双工器包括用于使预定频带中的信号通过的接收滤波器（3），并且对输入到天线端口的接收信号中的其它频带中的信号进行衰减;以及发送滤波器（4），用于在 预定频带，并衰减从外部输入的发送信号中的其他频带中的信号，并将其输出到天线端口。 双工器还包括具有连接到天线端口和平衡输出端子的单端输入端的转换电路（22）。 接收滤波器（3）设置有连接到转换电路（22）的输出端子的平衡输入端子和用于输出滤波后的接收信号的平衡输出端子。 因此，可以实现能够平衡输入型LNA连接并且没有功率处理能力的损耗和劣化的平衡输出型双工器，通信模块和通信设备。

公开/授权文献
信息查询
Espacenet
0/0